Condenser



April 14, 1925.

R. N. EHRHART CONDENS ER Filed Oct; 28, 1918 3 Sheets-Sheet 1 R. N. EHRHART CONDENSER Filed Oct, 28, 1918 3 Sheets-Sheet 2 INVENTOR war I April 14, 1925.

R. N. EHRHART QONDENSER 3 Sheets-Sheet 3 Filed Oct. 28, 1918 /Ill! if m I 1 A if? WITNESSES manua 14, 1925.

UNITED STATES PATENT OFFICE.

RAYMOND N. EHRHART, OF EDGEWOOD, PENNSYLVANIA, ASSIGNOR T COM- PAINT, 0F PITTSBURGH, PENNSYLVANIA, CORPORATION OF PENNSYLVANIA.

, CONDENSER;

lpplication filed October 28, 1918. B eriaI No. 259,948.

To all whom it may concern. 4

Be it known that I, RAYMOND N. EHRHART, a citizen of the United States, residing at Edgewood, in the county State of Pennsylvania, have invented a new and useful Improvementin Condensers, of which the followi is a full, clear, and exact description, re erence being had tothe accompanying drawings, forming part of this specification, in which- Figure l is vertical section on the line II of Figure 2 of a condenser embodying my invention.

Figure 2 is Figure 1.

Figure 3 is a detail sectional view showing the air ejectors and their controlling valve.

Figure 4 is a sectional view of one of the air e ectors on a larger scale, and

Figure 5 is a detail sectional view showing a portion of the condenser.

My invention has relation to condensers. It is designed to improve the mechanical construction of certain of the condenser partsfto struction and provide means of improved character permitting access to the water injection nozzles; to provide an improved conarrangement of the air ejectors together with means for cooling the air before it comes to such ejectorsj and to'provide means of improved character for obtaining access to the pumps.

The nature of my invention will be best understood by reference to the accompanying drawings in which I have shown a preferred embodiment thereof, and which will now be described, it being premised, however, that various changes can be made in the details of construction, arrangement and combination of the several parts, without departing from the spirit and scope of my invention. as defined in the appended claims.

In these drawings, the numeral 2 designates the inlet chamber of the condenser having the surrounding water box 3, and provided with a series of radially arranged water injection nozzles 5 which are arranged to discharge into the inlet chamher. The inlet chamber is preferably made in a separate piece from the body 6 of the condenser, and the water box is formed integrally therewith, the latter being of larger diameter than the body of the condenser so that its bottom wall forms a surof Allegheny and l l the water box all the seats for the cover plates 8 to be a section on the line IIlI of or suitable character.

rounding overhang. This surrounding overhang is provided at intervals with handholes 7, each of which is closed by a hand- 10 e plate or cover 8 secured by a. crab 9. The hand-holes 7 are so spaced and located, and are suflicient in number, to all the injection nozzles of the series. This not only makes itunnecessary to remove the inlet chamber to obtain access to and nozzles, but it permits made at a single facing operation in the factory.

1O designates a water one side of the box 3 and 10 designates a cone extension of the inlet chamber within the main chamber of the condenser. 11 indicates a vacuum breaker of any well-known 12 is a manhole giving access to the interior of the body of the condenser closed by the usual cover plate.

13 designates a passage leading to the air ejectors through the casing 14, this passage being inclined upwardly. The casin 14 is provided opposite the upper end of the passage 13 with a driwnwardly inclined spray nozzle 15 whichis designed to spray water against the incoming flow of air in the passage 13. The casing 14 is provided above the spray nozzle 15 with a double-seated valve 16 having its two seats at 17 and 18 respectively. This valve is carried by the screw stem 19 extending outwardly through The casing 14 is provided with a passage- 23at one end communicating with the ort through one of the valve seats-and leading to an air ejector 24. The opposite end of the casing 14 has a similar passage 25 communieating with the port through the other valve seat and leading to a second air ejector 26. lVith the valve 16 inits intermediate position both passages 23 and 25 are in full communication-with the passage 13, and the outflowing air divides between the twoejectors.

en, for any reason, it becomes necessary to shut off one of the ejectors, this can be readily done by actuating the valve to close it against one or the other of its two seats.

21, or other suitable actuating means. The casing of the stufling to to give access inlet connection at In Figure 4 I have shown one of the air ejectors, which I prefer to employ, 1n section. 27 designates the first stage inlet chamber, 28 the first stage steam chest, 29 the first stage steam nozzle and 30 the first stage diffuser. 31 designates the second stage steam chest, 32 the second stage steam nozzle, 33 the second stage inlet chamber and 34 the second stage diffuser which communicates with the exhaust connection 35 (see Figure 1). Each of the ejectors is preferably built up in sections so that the steam chests, the steam inlet chambers and the d1ffusers are separate parts, thereby giving ready access to any particular part for replacement or repairs. It will be noted that the second stage elements of the ejector are at right angles, to the elements of the first stage of the ejector. The second stage inlet chamber has a rotary fit at 36 with the diffuser 30, whereby said chamber, with its diffuser can be readily turned to any desired angle, thus making it possible to match up with the steam lines in various positions.

37 designates a water gauge, 38 the usual centrifugal pump and 39 the discharge pipe. The pump casing section 40 is made separately from the pump body 41 so as to permit it to be readily removed to give access to the pumps. Heretofore in this general type of condensers, the matter of removal of the pump covers has been a more or less difficult one, owing to the fact that the overhanging portions of the condenser are such that their projected area entirely covers the pump covers. Therefore, it has not been possible to make a. convenient block and tackle connection on account of such overhanging upper works of the condenser. To overcome this difficulty I provide a suitable lug or bracket 42 on the intermediate section 43, in which I journal a pulley 44. A line 45 can be readily run over this pulley and down to an eye-bolt 46 on the pump cover 40. This line can be carried off horizontally, or, in fact, in almost any convenient direction to a block and tackle.

The cover may, therefore, be easily raised out of position.

A. comparatively slight pull on the rope or line 45 will move it outwardly.' The same pulley can be used to advantage in the removal of the pump shaft after the pump cover is taken ofl.

Certain features of the construction of the condenser herein disclosed and of the pump casing are claimed in my copending application, Serial No. 677,667, filed November 30, 1923.

' The advantages of my invention will be apparent "to since it provides a condenser in which the mechanical construction is facilitated; in which there 1s a novel and eifectlve arrangement of the air ejectors and their controlling valve; which provides for a proper those familiar with this art,

cooling of the air before it reaches the ejectors; and in which the problem of ready access to the parts is simplified.

I claim j 1; A condenser havingv an air exhaust passage, two separate air ejectors communicating with said passage, and a double seating valve arranged to close the communication between the passage and either one of the air ejectors whereby either of said ejectors may be independently operated and the other completely out ofi' from said exhaust passage, said valve being constructed to also allow free communication between said passage and both of the ejectors, substantially as described.

2. A condenser having a divided air exhaust passage, and a double seating single valve arranged toindependently or simultaneously connect either or both of the branch passages to the main passage, sub-- stantially as described.

3. A condenser having a divided air eirhaust passage, and a double seating single valve arranged to control said passage, together. with an air ejector. connected to each branch of said passage, said valve being operable to independently or simultaneously connect either or both of the branch passages to the main passage, substantially as described.

4. A condenser having a branched air ex;- haust passage, a single means arranged to control the branches of said passage, andan air ejector connected to each branch of the passage, said means being operable toindependently or simultaneously connect either or both of the branch passages tothe main passage, substantially as described.

5. A con'denser having a branched air exhaust passage,-a single means arranged to control the branches of said passage, and a two-stage air ejector connected to each branch of the passage, said means being operable to independently or simultaneously connect either or both of the branch pas sages to the main passage, each of said ejectors having its second stage elements at substantially right angles to its first stage elements, substantially as described.

6. A condenser having a branched air exhaust passage, a single valve arranged to control the branches of said passage, and a two-stage air ejector connected to each branch of he passage, each of said ejectors having its second stage elements at substantially right angles to its first stage elements, together with means for spraying the air with water in said passage at a point between the condenser and the air ejectors, substantially as described.

7. A condenser having a branched air exhaust passage, a single valve arranged to control the branches of said passage, and a two-stage air ejector connected to each no i branch of the passage, each of said ejectors having its second stage elements at substantially right angles to its first stage elements, together with means for spraying the air with water in said passage in a direction opposite to the flow of air at a point between the condenser and the air ejectors. substantially as described.

8. The combination with a condenser, of means for ejecting air therefrom and permitting attachment of the condenser to standard piping, comprising a two-stage air ejector, said ejector having the inlet chamber, steam nozzle and diffuser of its second stage detachably connected together and all arranged at substantially right angles to the similar parts of its first stage, substantially as described,

9. The combination with a condenser, of.

means for ejecting air therefrom-and permitting attachment of the condenser to standard piping, comprising a twostage 'air ejector having separable elements coniprising its respective stages and arranged at substantially right angles to each other and connected by a rotary adjustable joint, substantially as described.

10. A condenser having an upwardly inclined air exhaust passage, two separate air ejectors communicating with said passage,-and a single means arranged to close the communication between said passage and either of said air ejectors, substantially as described.

11.'A jet condenser having an upwardly inclined airexhaust passage leading therefrom, two separate air ejectors communicating with said passage, and a single means arranged to close the communication between the passage and either of the air ejectors whereby either of said ejectors may be independently operated and the other completely cut off from said exhaust passage, said means being constructed to also allow free communication between said passage and both of the ejectors, substantially as described. a

12. A jet condenser having an upwardly inclined air exhaust passage leading therefrom, two separate air ejectors communicating with said passage, a single means arranged to close the communication between the passage and either of the air ejectors whereby either of said ejectors may be in dependently operated and the other completely cut ofi from said exhaust passage,

free communication between said said means being constructed to also allow passage and both of the ejectors, and means to discharge water into said passage in a direction opposite to the flow of air therethrough, substantially as described.

13. A condenser having an upwardly inclined air exhaust passage, two separate air ejectors communicating with said passage, a single means arranged to close the communication between said passage and either of said air ejectors, and means to discharge water into said passage in a direction 0pposite to the flow of air therethrough, substantially as described.

14. A jet condenser having an upwardly inclined air exhaust passage leading therefrom and divided to form branch passages, a single means arranged to independently or simultaneously. connect either or both of the branch passages to said exhaust passage, and an ejector connected to each ofv said branch passages, substantially as described.

15. A condenser having an air exhaust passage leadin therefrom and divided to form a plurality of branch passages, an ejector operatively connected to each of said branch passages, and a single means for independently permitting flow to one of said ejectors while preventing flow to any other ejector substantially as described.

16. A condenser having an air exhaust passage leading therefrom and divided to form a plurality of branch passages, an ejector operatively connected to each of said branch passages, and lasingle means for independently permitting flow to one of said ejectors, while preventing flow to any other e'ector, said means being operable to permit t e simultaneous operation of all of said ejectors, substantially as described.

17 A condenser having an air exhaust passa .e upwardly inclined and leading there rom, said passage being divided to provide a plurality of branch passages an air ejector operatively connected to eac of said .branch passages, means to ermit the independent operation of any 0 said ejectors, and means for directing water into said air exhaust passa e in a direction 0 posite to the flow of an therethrough, su stantially asdescribed.

In testimony whereof, I have hereunto set my 'hand.

RAYMOND N. EHIRHABT. 

